Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data

Details Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data Investigation of aquifer-estuary interaction using wavelet analysis of fiber-optic temperature data

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3606403h&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 6, CiteID L06403

Physics

Geophysics

5

Hydrology: Instruments And Techniques: Monitoring, Oceanography: General: Estuarine Processes (0442), Mathematical Geophysics: Wavelet Transform (3255, 4455), Mathematical Geophysics: Spectral Analysis (3205, 3280), Hydrology: Time Series Analysis (3270, 4277, 4475)

Scientific paper

Fiber-optic distributed temperature sensing (FODTS) provides sub-minute temporal and meter-scale spatial resolution over kilometer-long cables. Compared to conventional thermistor or thermocouple-based technologies, which measure temperature at discrete (and commonly sparse) locations, FODTS offers nearly continuous spatial coverage, thus providing hydrologic information at spatiotemporal scales previously impossible. Large and information-rich FODTS datasets, however, pose challenges for data exploration and analysis. To date, FODTS analyses have focused on time-series variance as the means to discriminate between hydrologic phenomena. Here, we demonstrate the continuous wavelet transform (CWT) and cross-wavelet transform (XWT) to analyze FODTS in the context of related hydrologic time series. We apply the CWT and XWT to data from Waquoit Bay, Massachusetts to identify the location and timing of tidal pumping of submarine groundwater.

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